Electroconductive textile heating element and method of manufacture
First Claim
1. A heating element comprising:
- electrically conductive nonmetallic yarns, including at least carbon fibers, assembled into a soft material of continuous longitudinal shape during textile fabrication;
said soft material is cut to a predetermined length and laid out into a predetermined pattern;
a conductive means for introducing an electrical current to said soft material;
an insulating means for insulating said electrically conductive soft material with at least one layer of nonconductive means; and
conditioned local spots for providing diversity and control of electrical resistance in selected areas of said soft material.
1 Assignment
0 Petitions
Accused Products
Abstract
A soft and flexible thin heating element is made of strong, light and non-metallic yarns. The heating element comprises electrically conductive carbon/graphite containing fibers, woven or stranded into the strips, ropes, sleeves or strands of threads. The selected areas of the heating element core are modified to impart additional electrical properties. An optional positive temperature coefficient (PTC) material is incorporated into said selected areas. The electrode conductors are attached to said heating element core which is electrically connected in parallel or in series. The heating element core is shaped in a desired pattern. The whole assembly is sealed by at least one electrically insulating layer which envelops the strips, ropes, sleeves, or strands of threads.
304 Citations
56 Claims
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1. A heating element comprising:
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electrically conductive nonmetallic yarns, including at least carbon fibers, assembled into a soft material of continuous longitudinal shape during textile fabrication;
said soft material is cut to a predetermined length and laid out into a predetermined pattern;a conductive means for introducing an electrical current to said soft material; an insulating means for insulating said electrically conductive soft material with at least one layer of nonconductive means; and conditioned local spots for providing diversity and control of electrical resistance in selected areas of said soft material. - View Dependent Claims (2, 3, 4, 5)
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6. A heating element comprising:
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electrically conductive nonmetallic yarns, including at least carbon fibers, assembled into a soft material of continuous longitudinal shape during textile fabrication;
said soft material is cut to a predetermined length and laid out into a predetermined pattern;a conductive means for introducing an electrical current to said soft material; an insulating means for insulating said electrically conductive soft material with at least one layer of nonconductive means; and at least two bus conductors, running through the full length of said element, at least one fragment of said heating element comprising positive temperature coefficient material and at least one fragment of woven electroconductive material, comprising carbon fiber yarns, disposed longitudinally between at least two of said bus conductors so that each one of said positive temperature coefficient material fragments directly connects to not more than one of said bus conductors. - View Dependent Claims (7)
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8. A soft heating element having a durable construction for incorporation into a plurality of articles, said element comprising:
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at least one continuous electrically conductive textile strip, including carbon yarns, incorporated longitudinally into said textile strip, said strip is cut to a desired length, folded and laid out in predetermined pattern to fit the area of said heating element, providing that said soft heating element comprises at least one gap between folded portions of at least one of said strips; a conductive means for introducing an electrical current to said textile strip; an insulating means for insulating said electrically conductive textile strip with at least one layer of nonconductive means. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A soft heating element having a durable construction for incorporation into a plurality of articles, said heating element comprising:
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a plurality of continuous electrically conductive textile strips, including carbon containing yarns, incorporated longitudinally into said textile strips, said strips are cut to a desired length, laid out in a predetermined pattern to fit the area of said heating element, providing that said soft heating element comprises at least one gap between said strips; strip bus conductors for introducing an electrical current to said textile strips; an insulating means for insulating said electrically conductive textile strips and said bus conductors with at least one layer of nonconductive means. - View Dependent Claims (25)
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26. A soft heating element having a durable construction for incorporation into a plurality of articles, said heating element comprising:
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at least one continuous electrically conductive nonmetallic textile strip, including ceramic fibers having carbon containing coating, incorporated as weft into said textile strip, said strip comprises conditioned local spots for providing diversity and control of electrical resistance; a conductive means for introducing an electrical current to said textile strip; an insulating means for insulating said electrically conductive nonmetallic textile strip with at least one layer of nonconductive means. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A soft heating element having a durable construction for incorporation into a plurality of articles, said element comprising:
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electrically conductive textile sleeve of continuous cross-section, including electroconductive carbon containing fibers, said sleeve comprises conditioned local spots for providing diversity and control of electrical resistance; a conductive means for introducing an electrical current to said textile sleeve; an insulating means for insulating said electrically conductive textile sleeve with at least one layer of nonconductive means. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. An electrode connector for introducing an electrical current to a heating element, comprising electrically conductive textile encapsulated by at least one layer of insulating material, said electrode connector comprises at least one electrically conductive insert penetrating into the body of said heating element through a transverse cut through said insulated conductive textile.
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50. A soft heating cable having a durable construction for incorporation into a plurality of articles, said heating cable comprising:
electroconductive carbon containing fibers, incorporated into continuous textile bundle, said bundle is encapsulated by at least one layer of insulating material, cut into desired length and terminated by two electrode connectors, providing that each of said connectors comprises an electrically conductive insert penetrating into the body of said heating cable through a transverse cut through said insulated textile bundle. - View Dependent Claims (51, 52, 53, 54, 55, 56)
Specification